iscsi: operation not supported

[robinsmidsrod]

When you get that error message, it is usually accompanied with a URL with a hex number in it. If you post those as well, we might be able to help you a bit more, as they contain quite important debugging details. You should of course also have a look at them and look at the bottom in the troubleshooting section of each of them.

To my knowledge, the target IQN should not be quoted. I'm not sure if it's even supported.